Report Shows ’Stunning and Dramatic’ Scenes of Thawing #Permafrost in Siberia That ’Leaves Millions on Unstable Ground’ | Common Dreams News
▻https://www.commondreams.org/news/2019/10/04/report-shows-stunning-and-dramatic-scenes-thawing-permafrost-siberia-l
In some parts of the world, permafrost lies in a relatively thin layer just below the ground’s surface. But in much of Yakutia, the permafrost is of a special, icy and far thicker variety. Scientists call it Yedoma.
Formed during the late Pleistocene, the Earth’s last glacial period, which ended about 11,700 years ago, Yedoma consists of thick layers of soil packed around gigantic lodes of embedded ice. Because Yedoma contains so much ice, it can melt quickly—reshaping the landscape as sudden lakes form and hillsides collapse.
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Scientists estimate that the Earth’s Yedoma regions contain between 327 billion and 466 billion tons of carbon. Were it all released into the atmosphere, that would amount to more than half of all human-caused emissions from greenhouse gases and deforestation between 1750 and 2011.
Avec trois degrés de plus, la #Sibérie se métamorphose - Page 1 | Mediapart
▻https://www.mediapart.fr/journal/international/051019/avec-trois-degres-de-plus-la-siberie-se-metamorphose?onglet=full
Selon l’analyse du Washington Post, la région de Zyryanka, en #Yakoutie, dans l’est de la Sibérie, s’est réchauffée de plus de 3 °C depuis l’époque préindustrielle, soit environ le triple de la moyenne mondiale.
